<?php

/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/8/19
 * Time: 15:45
 */
class 通过修改header强制图片下载
{
    function downloadFile($file){
        $file_name = $file;
        $mime = 'application/force-download';
        header('Pragma: public'); // required
        header('Expires: 0'); // no cache
        header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
        header('Cache-Control: private',false);
        header('Content-Type: '.$mime);
        header('Content-Disposition: attachment; filename="'.basename($file_name).'"');
        header('Content-Transfer-Encoding: binary');
        header('Connection: close');
        readfile($file_name); // push it out
        exit();
    }
}


